young people using the internet need much greater protection, says the children's commissioner for england. she says children are being exposed to dangers and giving away personal information without understanding the potential risks. with children the biggest users of the internet, we'll be asking what parents can do to help. also this lunchtime. uk car sales hit a record high last year but are expected to fall steeply this year. america increases the number of advisors in iraq, as the battle for mosul intensifies. does living near a busy road increase the risk of getting dementia? new research suggests there could be a link. and the naughty boy prince harry. letters from princess diana about her sons go up for auction this lunchtime. and coming up in a sport on bbc news, angry and frustrated, but alexis sanchez‘s moody behaviour is labelled normal by his manager arsene wenger, despite rumours the player could be considering his future. good afternoon and welcome

to the bbc news at one. young people are being left to fend for themselves when it comes to digital dangers such as bullying and grooming, according to the children's commissioner for england. anne longfield says children should be taught in school what they need to stay safe online. she also warned that children are frequently giving personal information away without knowing how their data will be used. here's our correspondent gillian hargreaves. look familiar? teenagers stuck to their mobile phones. millions are connected to their friends via social media but the children's

commissioner says too many are allowed to roam in a cyber world with limited protection and regulation. the girls at this high school in warrington think there is a risk. teenagers don't know what they're signing up to. the important thing you need to know about setting up thing you need to know about setting upa thing you need to know about setting up a profile, you need to be talking about it and kids need to be told. needs to be short and snappy. not 15 pages. the report calls for the appointment of a digital ombudsman to mediate between children and social media companies over online bullying. it also recommends there should be mandatory digital citizenship courses in schools and new privacy laws to protect children's personal information online. what everyone is trying to do is to respond to that change. pa rents a re do is to respond to that change. parents are struggling to do their bit. there is a role for government to intervene to help strengthen privacy laws and a role for schools as well in teaching stronger digital

curriculum and training. at hampstead high school, the gcse computer studies pupils are technically savvy with many aware of the dangers of digital technology. we need another programme. it's not just good schools. right from the age of four through the sixth form, children are already talk about how to stay safe online in assemblies, working with a bullying officer and police, and we have an evening for pa rents police, and we have an evening for parents where we invite them in to inform them about how they can help keep their children safe online. schools can only do so much. contracts for social media sites can be lengthy with complicated wording and many children can struggle to understand exactly what they are signing up to. when children use social media sites, they give their consent to the site, so comments, photos, e—mail address, name,

information like that which they may know about but they may not know that that information is then given to third—party companies who will target them with specific adverts. social media companies like instant gram, facebook and twitter, say they ta ke gram, facebook and twitter, say they take child security seriously and say their services are suited to children over the age of 13 and will shut down underage account and forbid the posting of offensive material. and gillian is with me. so what can parents do? it's fair to say the social media companies are pretty stunned by this report and said there's lots of information out there for parents. their applications to explain how you can set your child poverty settings, information about the sort of conversations you should be having with your child to teach them to post material responsibly and there are swift mechanisms they say to ta ke there are swift mechanisms they say to take material down. when there is an issue of bullying or inappropriate or offensive material,

but the children's commissioner says is not good enough and there needs to bea is not good enough and there needs to be a tightening of children's information and rights online and she also wants a proper mediator set up she also wants a proper mediator set up to act on children's behalf when there are issues about taking material down that is offensive. 0k, many thanks. a record number of new cars were sold last year in the uk, up more than 2% on the previous 12 months. the increase was due to high demand from business customers. but sales are expected to fall by 5% in 2017. our industry correspondent john moylan reports. the ford fiesta. for the eighth year ina row, the ford fiesta. for the eighth year in a row, it's been britain's most popular new car. in 2016, it was one of the reasons why the new car market hit an all—time high. according to the industry, last year, according to the industry, last yea r, total sales according to the industry, last year, total sales hit almost 2.7 million cars, up 2.3% on the

previous year which was also a record high. and it's cheap finance deals which are driving the successful for the vast majority of customers now effectively lease cars rather than buy the outright. bringing what was once an affordable within reach. all of the options that are now available with leasing and financing, i can now pay less overall, on a monthly basis, but still go home with a brand—new car. we decided to look around and if we see a new car that's convenient for us, and the finances all right, we will go for it. you can have a car like that for £10 a month. that shift in how we buy cars is changing the type of car we are buying, to. there's a real trend for people to buy more upmarket cars because the monthly payments are not that much greater than buying a more mainstream vehicle and people are very conscious and want the latest technology and that's what these manufacturers are offering for a

more affordable price than ever. but the industry expects the new car market to fall by 5% this year. consumer demand is waning and higher prices are coming to forecourts. the pressure which comes from a lower value pound to a certain extent it does help exporters but the converse of that it makes imports more expensive, around six out of seven ca i’s expensive, around six out of seven cars we sell are imported so the pressure of that depreciation in sterling will undoubtedly flow through to the price rises. car sales are often a good barometer for the health of the wider economy but with sales expected to fall and forecourt prices expected to rise, 2017, the industry could be in for a bumpy ride. meanwhile, the uk's service sector grew at its fastest pace for 17 months in december. services, which cover everything from retail and transport to banking and accounting, make up three—quarters of the economy. sterling rose this morning on the publication of the figures. our business correspondent, jonty bloom is here.

what do these figures tell us about the outlook for the economy? this is a survey of purchasing managers. the people who buy commodities and raw materials for companies. they have to look ahead because they have to predict what demand is going to be like so this isa demand is going to be like so this is a survey used as a predictor of what is likely to happen in the economy and what it shows us is in the services sector which dominates the services sector which dominates the uk economy, things are going pretty well. very high growth in december and not only that, when you ask these people to look ahead and see what they think is going to happen in 2017, they remain confident despite worries about brexit and forthcoming european elections. they think things will stay steady for the that's a surprising result because many economists have predicted the british economy will slow down in 2017 but the one thing that this survey also points out is that the service industries and manufacturing and construction earlier this week are all saying price pressures are increasing and imports are going up

because of a fall in the value of the pound and that means they will have to pass that on to the customers in the coming months. we would expect that to happen, the fall in the pound will increase inflation, and this is basically saying we're already seeing the first signs of that happening. 0k, many thanks. a group of mps and peers says immigrants should be expected to learn english before coming to britain or attend compulsory language classes when they arrive. the parliamentary group also suggests ministers should consider letting different parts of the uk set their own immigration policy. our home affairs correspondent danny shaw reports. i will give my loyalty to the united kingdom. a landmark on the way to being integrated into british society. as a british citizen. these people are becoming uk citizens with a promise to respect our rights, freedoms and laws. but there is

growing agreement that successful integration into britain also depends on having a command of the english language. migrants, when they arrive in the uk, would like to learn english and are aware of the disadvantages of not learning english, i think we need to make sure that the resources are in place for migrants to be able to access full time education support. the importance of language provision is emphasised in a report from a group of mps and peers. it says all immigrants should learning place before coming to the uk or enrol in classes when they are here. it also calls for courses to teach immigrants about british culture and the report says the government should give immigrants guidance on the costs and benefits of uk citizenship and consider cutting the fees for naturalisation. my name is beatrix. i am a student. english classes are already available and the home office says its spending an extra £20 million on those in

greatest need. some believe it will be unfair if it was compulsory for eve ryo ne be unfair if it was compulsory for everyone coming to live in the uk. this will have a huge impact on people coming over to their loved ones, especially those people coming over from ones, especially those people coming overfrom a village. ones, especially those people coming over from a village. they are not often very literate and therefore learning english as a second language is extremely difficult for them. the report on integration launched at an event in london also suggested devolving immigration policy to britain's nations and regions and they would be able to allocate these there's according to local need. shaping immigration criteria to address national or regional needs will instil rater confidence the system works for your for every area. under current laws, some immigrants are allowed in to do specific jobs like some immigrants are allowed in to do specificjobs like these fruit pickers from eastern europe working ata pickers from eastern europe working

at a farm in scotland. but the home 0ffice at a farm in scotland. but the home office says planning to introduce local visa arrangements because it would be too compensated. the chancellor philip hammond has spoken for the first time about the departure of the out—going uk ambassador to the eu. sir ivan rogers resigned on tuesday complaining of muddle and confusion in the uk's approach to brexit. mr hammond said he had done a good job, but had chosen to resign early because of the timing of brexit negotiations. 0ur political correspondent vicky young is in westminster. what more did he have to say and how are things looking now for theresa may's brexit strategy? we are starting the air as we finished it when it comes to brexit with lots of questions about whether theresa may and her team questions about whether theresa may and herteam are questions about whether theresa may and her team are ready for those negotiations, whether they have a tea m negotiations, whether they have a team which is experienced enough, whether they had even decided on the objective is. the problem for downing street is those questions are coming from someone who has been

on the inside for several years i think what we have seen is downing street trying to get back on the front foot with this swift appointment of a new ambassador and it's an appointment but has gone down pretty well, lots of praise for him for his energy, his enthusiasm and for his knowledge. here's a very experienced and seasoned diplomat. very tough. he was our ambassador in moscow for many years. he has worked in the eu before, so he has good knowledge of how the eu works and is a very tough negotiator. so he's going to be a great asset for britain in this negotiating process. soa so a huge task ahead for sir tim barrow the new ambassador and the government. there's lots of speculation at how much more theresa may will tell us ahead of those negotiations. she is said to be working on a speech which will come in the next few weeks laying out a little bit more, but of course, there is speculation about how far she will be able to go. we know from what she has said before that she

believes the brexit vote was about immigration, taking back control of our borders and we also know from those in the eu that they feel that britain can't stay in the single market if it does not accept freedom of movement and that's leaving many people to suggest that the hints will be that we would be willing to leave the single market in order to control immigration but theresa may knows that whatever she says she will upset some of the mps in her party. 0k, thank you. four people have been arrested in the us city of chicago over a video live—streamed on facebook in which a bound and gagged man was assaulted. police say the victim has special needs. his assailants can be heard making derogatory statements against white people. the man, whom police say was acquainted with one of his attackers, has now been released from hospital. helena lee reports. most of the 30 minute video is too graphic to show. the victim, who is white and have mental health

challenges, was bound and gagged by his attackers. at least two were african—american and made racist comments. at one point, they cut his clothes, several people can be heard laughing in the background. then they partially scalp him with a knife. this was all broadcast live around the world on the social media site facebook. it's sickening and makes you wonder what would make individuals to somebody like that. the victim was held for up to 48 hours ina the victim was held for up to 48 hours in a flat in chicago, a city where, last year, there was a murders, more than in new york and los angeles combined. the victim is now out of hospital traumatised by what happened. four people are in

custody and police say they are looking into whether a hate crime has taken place. our top story this lunchtime. young people using the internet are being exposed to dangers and need much greater protection, says the children's commissioner for england. and still to come: the latest artificial intelligence gadgets promising to make life easier in the 21st century. coming up in sport at 1:30pm: britain'sjohanna konta is one win away from reaching her third wta final, after victory in the quarterfinals of the shenzhen open in china. the united states says it has doubled the number of military advisors in support of iraqi forces trying to retake the city of mosul from the so—called islamic state group. iraq's second city has been under is control for over two years, and there are increasing fears for the hundreds of thousands of civilians still there.

daniel boettcher has the latest. gunshots. heavy gunfire in mosul this morning. the us led coalition supporting iraqi security forces says more than 60% of the eastern half has been won back from so—called islamic state. the offensive began in october and is in its second phase. the us says it is now taking measures to speed up the advance and that includes doubling the number of military advisers assisting iraqi troops. time is not on the enemy's side. it's on the side of the iraqi security forces. they are going to retake mosul. they continue making progress in doing so. we're going to continue to support the actions that they do with our air and artillery strikes, isr and our advice and assistance. these unverified images are said to show part of the operation, artillery strikes against is targets. there are still more than 5000

american military personnel in iraq. during a helicopter tour over recently recaptured areas, the commander of the us—led coalition said iraqi forces confronting is in mosul were gaining momentum, though he conceded that the attack initially lacked coordination. some of the civilians who fled during the conflict have been returning to their homes in the areas of the city that have been retaken, but the united nations has again warned about the dangers faced by those remaining in is controlled areas. members of the council also expressed grave concern for the almost1 million civilians that are out of reach currently for humanitarian support and access in areas under isil/daesh control in mosul, suffering indiscriminate violence and abuse. though iraqi forces are making gains, they have yet to enter the west of mosul, which is still held

by so—called islamic state. daniel boettcher, bbc news. the week—old ceasefire in syria appears to be largely holding, though there have been some fierce clashes in the barada valley outside damascus. the government says the truce does not apply there because of the presence of al-qaida—linked fighters, one of the groups excluded from the deal. 0ur middle east correspondent alex forsyth is in beirut. the un's envoy to syria is due to speak shortly, can we expect a more positive assessment from him? in some parts of syria there's a sense of cautious optimism. after seven days, the ceasefire appears to be largely holding in areas that until a week ago had seen intense fighting and bombardment. yesterday, aun fighting and bombardment. yesterday, a un official said fighting and bombardment. yesterday, a un officialsaid in fighting and bombardment. yesterday, a un official said in aleppo despite the enormous humanitarian need which still exists, the last few days

without violence had allowed some much needed medical supplies, food and in some cases shelter to be provided, but elsewhere the violence continues. there are ongoing reports of the syrian regime bombing parts of the syrian regime bombing parts of the syrian regime bombing parts of the damascus countryside which has been under rebel control for some years and it's strategically important because it supplies much of the water supply to damascus, which has had water shortages for some ten days now. the rebel group says the raid g—men's bombardment of the area represents a violation of the area represents a violation of the ceasefire agreement —— the rebel. after a week, this is only a very small and still faltering step on what remains a long and complex road before there's any real hope of a lasting peace. alex forsyth, thank you. people who live near main roads may be at greater risk of dementia. according to a decade—long study by scientists in canada,

one in ten cases could be linked to living near a major road. the researchers say more work is now needed to understand the link. 0ur health correspondent robert pigott reports. arterial roads carry the lifeblood of cities such as toronto, but are a p pa re ntly of cities such as toronto, but are apparently the source of disease as well. a study of nearly 2 million people in nantes reo over 11 years suggested that among people living within 50 metres of a major road, as many as 11% of dementia cases could be the result of traffic —— in 0ntario. tiny particles from exhaust and tyres could be part of the reason. how those particles work are speculative, but one hypothesis is through fairly nonspecific at on information and stress in the body, so we have a potential mechanism that it so we have a potential mechanism thatitis so we have a potential mechanism that it is far from proven. dementia robs people of their memories and leads to increasing disability. 50

million people around the world have the disease and the rate is rising. the canadian study used people living at least 300 metres from a major road as its baseline. the risk of dementia increased by 2% between 100 and 200 metres, was 4% greater between 50 and 100 metres, and 7% higher within 50 metres. given that so many people were studied and for so many people were studied and for so long and that the researchers took into account factors such as poverty, obesity and whether people smoked, the findings are highly striking. but although the study can show a close association between roads and dementia, it doesn't prove that the roads cause the disease. traffic pollution is one reason, but we know that living next to a busy road is noisy, stressful, people may have more disturbed sleep, which can also be a factor for dementia. british experts say the study has

important applications for public health in the uk, but while the exact causes of dementia remained largely unknown they say a healthy diet, exercise and stopping smoking are still the best advice for avoiding it. robert pigott, bbc news. the price of petrol and diesel in december rose to its highest in 18 months. the rac says both fuels went up by three pence a litre during the festive month alone. our business correspondent theo leggett is at a petrol station in west london. anybody who's been to a petrol station like this one recently will probably have noticed that prices have been going up, but they went up particularly sharply in december. 3p a litre for both petrol and diesel. the reason for that is pretty clear. at the beginning of december, there was news from 0pec, the oil producers' cartel, that oil producers' cartel, that oil producers were going to reduce their output. petrol and diesel, producers were going to reduce their output. petroland diesel, made producers were going to reduce their output. petrol and diesel, made from crude oil, that pushes the price up. we have further falls in the

value of the pound during the december and that doesn't help because crude oil is priced in dollars. that was december alone. if you look at the year as a whole, the oil price rose throughout the year, it almost doubled. the pound lost a lot of its value after the referendum in june. you lot of its value after the referendum injune. you have these two factors, which means it costs about £8 more to fill up your average family sized runabout than it did this time last year. for a while he was characterised — in some parts of the press, at least — as the bad boy prince. and it seems his mother might have guessed it from early on. letters written by princess diana reveal that prince harry was routinely in trouble at school. the letters are up for auction in cambridge today, and our correspondent, sarah campbell, is there. the auction here of collectables is well under way. i can tell you these royal lots which have garnered worldwide interest, start at number 287. we are currently at lot number

201. it's not long to go now. there are bidders poised by the concert —— computers and their phones in the us, germany and japan and if the highest reserve bids are met it should garner a total of around £13,000 for the whole collection but the auctioneers believe it will get more than that, not least because of those star lots, the letters penned by diana, princess of wales. she was a princess, he was stuff, but her letters to cyril dickman we re but her letters to cyril dickman were heartfelt and personal, revealing a little of life behind palace walls. handwritten, they were written in the early 80s and 90s, when diana was a young man and it's the letters referring to her two sums which have generated the most interest asked diana was a young mother. these letters focus on her speaking to or writing to a friend about her children and in the capacity of being a mother, not a royal princess, necessarily. it comes over in a way that we can

relate to. in 1984, william's eagerness to see his new baby brother wasn't just in front eagerness to see his new baby brother wasn'tjust in front of eagerness to see his new baby brother wasn't just in front of the cameras, as diana revealed to cyril, writing just five days after harry's burst. william adores his little brother and spends the entire time swamping harry with an endless supply of hugs and kisses, hardly letting the parents near. and she wrote of the public‘s reaction to the new baby. it's totally overwhelmed us and i can hardly breathe for the mass of flowers that are arriving here. the letters are among 40 lots belonging to the former head steward at buckingham palace. his family were unaware until after his death just how close he was to the royal family. the whole point of today was to showcase what an incredible man my grandfather was, so to find out he was as close as we believed he was to the royal family isa believed he was to the royal family is a pleasure, really. another letter, this time from 1992. alluding perhaps to the troubles in her marriage, which were about to be

made public, diana thanks cyrilfor thinking of her at this difficult period and writes that the boys are well and enjoying boarding school a lot, although harry is constantly in trouble. the description not unfamiliar to others who worked closely with the family. he was a lwa ys closely with the family. he was always thejoker, the one with problems with the teaching staff, etc, because that and nature. we see it in his adult life now. for that reason he has endeared himself to the public but diana was being very honest. it's almost 20 years since diana died, but she remains an object of fascination to people the world over. although the diana letters have grabbed the headlines there are plenty of other interesting items including a slice of wedding cake from the queen's wedding in 1947, which is probably passed its sell by date! sarah, thank you. the biggest technology show in the world gets underway today in las vegas. ces, as it's known, has attracted nearly 4000 exhibitors from all over the world. there's a range of products designed

for the home, which claim to use artificial intelligence. here's our technology correspondent, rory cellan—jones. in a penthouse suite at a ritzy las vegas hotel, smart home exhibits are on show. there's a smart speaker for children, where each toy is a playlist. # everybody was kung—fu fighting...#. alexa, trigger lock. a voice—activated door lock. and upstairs... snoring. ..there's even nora, described as a smart snoring solution. this little device is paired with a pad under the pillow which detects me snoring and moves just enough to stop me, without waking me up. the big theme this year is turning the advances in artificial intelligence into products. there are robots of course. this one's meant to be a shop assistant, while this one is designed as a companion for children or elderly people. but a! seems to get everywhere, even into this toothbrush, which learns

how you brush your teeth. artificial intelligence is not just gathering the data, it's being able to use the data. then you learn where your weaknesses are, where your strengths are and the purpose is to become better at taking care of your oral health. this walking stick is also smarter than it looks. an in—built mobile phone sim card means it can help if there's an accident. it will detect the fall of its user and when it detects it it will alert the family or the neighbour, so they can come and help these people. and this clever mirror helps anyone to try out make—up. bienvenue a las vegas! out on the las vegas strip, danny manu, a young entrepreneur from manchester, hasjust flown in. welcome to las vegas. his instant translation headphones aren't quite ready. they will eventually be tiny earbuds, but he's still looking forward to ces. this is important because we will be able to showcase what we've been

working on to the world, to show this is something we started years ago as a small team, as a small start—up, with dedication and passion. the odds are against danny, a one—man band taking on giants like apple and google, but like plenty of people here this week, he's betting that he has the product that can change the world. rory cellan—jones, bbc news, las vegas. time for a look at the weather. here's ben rich. plenty of sunny weather, but at this time of year it's often chilly and it was certainly a cold and frosty start this morning. 0ur weather watchers braved the chill to take some beautiful pictures from up and down the country, including this one from 0xfordshire. a pretty frosty